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vm_phys: Add corresponding sysctl knob for loader tunable

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The loader tunable 'vm.numa.disabled' does not have corresponding sysctl
MIB entry. Add it so that it can be retrieved, and `sysctl -T` will also
report it correctly.

Reviewed by:	markj
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D42138
This commit is contained in:
Zhenlei Huang 2023-10-12 18:14:49 +08:00
parent a55fbda874
commit c415cfc8be
1 changed files with 9 additions and 4 deletions
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13
sys/vm/vm_phys.c
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@ -76,6 +76,12 @@ _Static_assert(sizeof(long long) >= sizeof(vm_paddr_t),
#ifdef NUMA
struct mem_affinity __read_mostly *mem_affinity;
int __read_mostly *mem_locality;
static int numa_disabled;
static SYSCTL_NODE(_vm, OID_AUTO, numa, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"NUMA options");
SYSCTL_INT(_vm_numa, OID_AUTO, disabled, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
&numa_disabled, 0, "NUMA-awareness in the allocators is disabled");
#endif
int __read_mostly vm_ndomains = 1;
@ -627,15 +633,14 @@ vm_phys_register_domains(int ndomains, struct mem_affinity *affinity,
int *locality)
{
#ifdef NUMA
int d, i;
int i;
/*
* For now the only override value that we support is 1, which
* effectively disables NUMA-awareness in the allocators.
*/
d = 0;
TUNABLE_INT_FETCH("vm.numa.disabled", &d);
if (d)
TUNABLE_INT_FETCH("vm.numa.disabled", &numa_disabled);
if (numa_disabled)
ndomains = 1;
if (ndomains > 1) {